function varargout = NRN_PCA(varargin)
% NRN_PCA M-file for NRN_PCA.fig
%      NRN_PCA, by itself, creates a new NRN_PCA or raises the existing
%      singleton*.
%
%      H = NRN_PCA returns the handle to a new NRN_PCA or the handle to
%      the existing singleton*.
%
%      NRN_PCA('CALLBACK',hObject,eventData,handles,...) calls the local
%      function named CALLBACK in NRN_PCA.M with the given input arguments.
%
%      NRN_PCA('Property','Value',...) creates a new NRN_PCA or raises the
%      existing singleton*.  Starting from the left, property value pairs are
%      applied to the GUI before NRN_PCA_OpeningFunction gets called.  An
%      unrecognized property name or invalid value makes property application
%      stop.  All inputs are passed to NRN_PCA_OpeningFcn via varargin.
%
%      *See GUI Options on GUIDE's Tools menu.  Choose "GUI allows only one
%      instance to run (singleton)".
%
% See also: GUIDE, GUIDATA, GUIHANDLES

% Edit the above text to modify the response to help NRN_PCA

% Last Modified by GUIDE v2.5 01-Sep-2006 13:42:27

% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @NRN_PCA_OpeningFcn, ...
                   'gui_OutputFcn',  @NRN_PCA_OutputFcn, ...
                   'gui_LayoutFcn',  [] , ...
                   'gui_Callback',   []);
if nargin && ischar(varargin{1})
    gui_State.gui_Callback = str2func(varargin{1});
end

if nargout
    [varargout{1:nargout}] = gui_mainfcn(gui_State, varargin{:});
else
    gui_mainfcn(gui_State, varargin{:});
end
% End initialization code - DO NOT EDIT


% --- Executes just before NRN_PCA is made visible.
function NRN_PCA_OpeningFcn(hObject, eventdata, handles, varargin)
% This function has no output args, see OutputFcn.
% hObject    handle to figure
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
% varargin   command line arguments to NRN_PCA (see VARARGIN)

% Choose default command line output for NRN_PCA
handles.output = hObject;

% Update handles structure
guidata(hObject, handles);

% UIWAIT makes NRN_PCA wait for user response (see UIRESUME)
% uiwait(handles.figure1);


% --- Outputs from this function are returned to the command line.
function varargout = NRN_PCA_OutputFcn(hObject, eventdata, handles) 
% varargout  cell array for returning output args (see VARARGOUT);
% hObject    handle to figure
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Get default command line output from handles structure
varargout{1} = handles.output;


% --- Executes during object creation, after setting all properties.
function pca_CreateFcn(hObject, eventdata, handles)
dt=get(findobj('Tag','load_data'),'UserData');
V=cov(dt.nx);
SD = sqrt(diag(V));
[COEFF, latent] = pcacov(V./(SD*SD'));
plot(COEFF(:,1),COEFF(:,2),'.','MarkerSize',5,'Color','r');
pca.dt=dt;pca.COEFF=COEFF;pca.latent=latent;
ax=axis;dx=(ax(2)-ax(1))/50;
text(pca.COEFF(:,1)+dx,pca.COEFF(:,2),pca.dt.vars(1:end-1),'FontSize',8,'Color',[0 0 1])
xlabel(['PC1 (',sprintf('%.2f',pca.latent(1)),'% var)']);
ylabel(['PC2 (',sprintf('%.2f',pca.latent(2)),'% var)'])
zoom on
set(hObject,'UserData',pca);
set(hObject,'UserData',pca);
set(hObject,'Tag','pca');
%disp(':-)')
%disp(':-)')
%disp(':-)')

% hObject    handle to pca (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: place code in OpeningFcn to populate pca




% --- Executes on button press in pca_3d.
function pca_3d_Callback(hObject, eventdata, handles)

h=findobj('Tag','pca');
pca=get(h,'UserData');
axes(h);
plot3(pca.COEFF(:,1),pca.COEFF(:,2),pca.COEFF(:,3),'.','MarkerSize',5,'Color','r');
ax=axis;dx=(ax(2)-ax(1))/50;
text(pca.COEFF(:,1)+dx,pca.COEFF(:,2),pca.COEFF(:,3),pca.dt.vars(1:end-1),'FontSize',8,'Color','b');
xlabel(['PC1 (',sprintf('%.2f',pca.latent(1)),'% var)']);
ylabel(['PC2 (',sprintf('%.2f',pca.latent(2)),'% var)'])
zlabel(['PC3 (',sprintf('%.2f',pca.latent(3)),'% var)'])

rotate3d
set(h,'Tag','pca');
set(h,'UserData',pca);

% hObject    handle to pca_3d (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hint: get(hObject,'Value') returns toggle state of pca_3d




% --- Executes on button press in pca_2d.
function pca_2d_Callback(hObject, eventdata, handles)

h=findobj('Tag','pca');
pca=get(h,'UserData');
axes(h);
plot(pca.COEFF(:,1),pca.COEFF(:,2),'.','MarkerSize',5,'Color','r');
ax=axis;dx=(ax(2)-ax(1))/50;
text(pca.COEFF(:,1)+dx,pca.COEFF(:,2),pca.dt.vars(1:end-1),'FontSize',8,'Color','b');
xlabel(['PC1 (',sprintf('%.2f',pca.latent(1)),'% var)']);
ylabel(['PC2 (',sprintf('%.2f',pca.latent(2)),'% var)'])
zoom on
set(h,'Tag','pca');
set(h,'UserData',pca);

% hObject    handle to pca_2d (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hint: get(hObject,'Value') returns toggle state of pca_2d




% --- Executes on button press in pca_3d_roda.
function pca_3d_roda_Callback(hObject, eventdata, handles)
h=findobj('Tag','pca');
pca=get(h,'UserData');
axes(h);
plot3(pca.COEFF(:,1),pca.COEFF(:,2),pca.COEFF(:,3),'o')
set(h,'Tag','pca');
set(h,'UserData',pca);
roda
set(h,'UserData',pca);
% hObject    handle to pca_3d_roda (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hint: get(hObject,'Value') returns toggle state of pca_3d_roda


